Oct 25, Fall is the time for the most severe pruning of spirea. With sharp shears, cut each stem back to about 8 inches (20 cm.) from the ground. Don’t worry that the plant won’t bounce back. In the spring, spirea will reward you’re courageous pruning with. Mar 02, More drastically cutting back spirea should occur in the fall or in late winter to early spring. Remove any dead branches and use this trimming to shape the shrub. Cutting it way back will stimulate new growth in tighter clusters so that you can get a more rounded, compact shrub shape.
Mar 30, Wondering when to prune spirea bushes? The best time to prune spirea is after the first flowering. For a spring-blooming cultivar, a good time will be in late spring. For a summer-blooming variety, this will be in mid-summer. During the spirea trim, cut the back when is the best time to cut back spirea bushes tips of the stems to the top of the leaf bushremoval.buzzted Reading Time: 5 mins.
Trim back overgrown spireas or those that produced sparse foliage on the lower stems severely in fall after the foliage begins to fall off, to keep the shrubs shaped and compact. Cut back each stem to within 8 to 12 inches of the ground.
In the same manner people ask what month should you trim bushes? The best time to rejuvenate large. Nov 23, To control the spirea's size and keep it blooming year after year, you should prune it back after blooming or when it's dormant in winter. If. Jun 23, Spireas that bloom in spring: in this group are for example the Thunberg spirea and Vanhoutte spirea. The right time to prune the species that bloom in spring is after flowering, ie late spring.
Those spireas that bloom during the summer: in this second case there is the false spirea, and it must be pruned before the growth of spring begins. For instance, some varieties of Azaleas only bloom once and the best time to prune them would be as soon as possible after they bloom.
Ideally, there is only a six-week window of when pruning is appropriate.
But some of the newer varieties bloom twice and can be pruned twice (also soon after blooming). Hydrangea shrubs also have variations.